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Method of manufacturing electrode assembly and electrode assembly manufactured by the same

An electrode assembly and electrode technology, which is applied in the manufacture of battery components, electrical components, and final products, can solve problems such as battery performance degradation, interface cracking, and uneven adhesion between electrodes and separators, so as to improve battery performance. , the effect of preventing lithium precipitation and preventing interface cracking

Pending Publication Date: 2022-05-27
LG ENERGY SOLUTION LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, there is a problem of non-uniform adhesion between the electrodes and the separator in the bi-cell
In severe cases, there is a problem that the electrodes and the separator are not adhered to each other on the outside, and thus the interface is cracked, so that processability cannot be ensured
[0008] In addition, when bonding is performed by extra strong pressing only to the outside of the electrode and separator, if strong adhesion is formed along the outside, there is a possibility that battery performance will deteriorate due to lithium deposition due to internal gas in the electrode assembly not being exhausted. Deterioration problem

Method used

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  • Method of manufacturing electrode assembly and electrode assembly manufactured by the same
  • Method of manufacturing electrode assembly and electrode assembly manufactured by the same
  • Method of manufacturing electrode assembly and electrode assembly manufactured by the same

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Embodiment Construction

[0025] The objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. It should be noted that, wherever possible, the same reference numerals are used to add reference numerals to components in the figures of the present application, even though these components are shown in other figures. Furthermore, the present invention may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. In the following description of the present invention, a detailed description of the related art that may unnecessarily obscure the gist of the present invention will be omitted.

[0026] A method of manufacturing an electrode assembly according to an embodiment

[0027] figure 1 is a perspective view illustrating a method of manufacturing an electrode assembly according to an embodiment of the present invention,...

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Abstract

The present invention relates to a method for manufacturing an electrode assembly and an electrode assembly manufactured by the same, the method comprising: a corona treatment step of performing a corona discharge treatment on both edges of a separator in a direction perpendicular to a traveling direction; a lamination step for alternately laminating the corona-treated separator and the electrode; and a bonding step of pressing the laminated separator and the electrode to bond the separator to the electrode, in which, in the corona treatment step, both edges of the separator are locally corona-discharged to form a corona-treated portion and a non-corona-treated portion.

Description

technical field [0001] CROSS-REFERENCE TO RELATED APPLICATIONS [0002] This application claims the benefit of priority from Korean Patent Application No. 10-2019-0131002 filed on October 21, 2019, which is incorporated herein by reference in its entirety. [0003] The present invention relates to a method of manufacturing an electrode assembly and an electrode assembly manufactured by the method. Background technique [0004] Unlike primary batteries, secondary batteries are rechargeable and have a higher possibility of compact size and high capacity. Thus, many studies on secondary batteries are being conducted recently. With technological development and increasing demand for mobile devices, the demand for secondary batteries as an energy source is rapidly increasing. [0005] Rechargeable batteries are classified into coin type batteries, cylindrical type batteries, prismatic type batteries, and pouch type batteries according to the shape of the battery case. In s...

Claims

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Application Information

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IPC IPC(8): H01M10/04H01M50/531
CPCH01M10/0413H01M10/0436H01M50/531Y02P70/50H01M50/46Y02E60/10H01M10/0468H01M50/54H01M50/403H01M50/463
Inventor 权纯宽崔成元郑守宅
Owner LG ENERGY SOLUTION LTD